WE’RE SUPPOSED to be impressed with the Senate’s latest plan to pay for the country’s roads, bridges and rails. Sen. Orrin G. Hatch (R-Utah) declared this week that the bill is “a historic opportunity” that would “be a significant victory for good government.” What’s more, “it would provide a great example of what is possible when members of both parties work together.” Sen. Barbara Boxer (D-Calif.) then joined Mr. Hatch...